"Colonel Rob Maness is a constitutional conservative with a remarkable record of service to our country," Senate Conservatives Fund Executive Director Matt Hoskins said in a statement on Monday "He understands the value of our freedoms and will fight to repeal Obamacare and stop the massive spending, bailouts, and debt that are bankrupting our country. He offers voters a compelling choice over Senator Mary Landrieu because he's not a Washington insider. Colonel Maness is a principled leader who will make Louisiana proud."

The endorsement is the latest one by the influential Senate Conservatives Fund. The group has recently endorsed Matt Bevin who is challenging Senate Minority Leader Mitch McConnell (R-KY) in the Republican primary and state Sen. Chris McDaniel (R-MS) in the primary for Sen. Thad Cochran's (R-MS) Senate seat.